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1. (WO2018223089) USE OF INDIVIDUAL BLADE CONTROL ON A PROPELLER OR ROTOR IN AXIAL FLIGHT FOR THE PURPOSE OF AERODYNAMIC BRAKING AND POWER RESPONSE MODULATION

Pub. No.:    WO/2018/223089    International Application No.:    PCT/US2018/035735
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat Jun 02 01:59:59 CEST 2018
IPC: B64C 11/30
B64D 27/24
B64D 27/10
B64C 29/00
B64C 27/54
Applicants: KAREM AIRCRAFT, INC.
Inventors: KAREM, Abe
TIGNER, Benjamin
Title: USE OF INDIVIDUAL BLADE CONTROL ON A PROPELLER OR ROTOR IN AXIAL FLIGHT FOR THE PURPOSE OF AERODYNAMIC BRAKING AND POWER RESPONSE MODULATION
Abstract:
Systems and methods are contemplated for favorably improving flight dynamics of aircraft, including enhanced aerodynamic braking and improved flight maneuverability. Air braking systems selectively position a first set of blades at a negative thrust pitch to product a net negative thrust across first and second sets of blades, while balancing torque of the drive shafts to zero. First and second sets of IBC blades can be driven by the same shaft or torque-linked shafts. Flight maneuver systems operate a powerplant at a high power mode, and dissipate the energy from the high power output by positioning a first set of IBC blades at a low efficiency pitch while maintaining constant thrust. As increased or rapid flight maneuverability is required, the first set of blades is positioned toward a high efficiency pitch to instantly increase thrust to the aircraft without requiring a related increase in energy output from the powerplant.